Geometric design stencil



June 30, 1965 E. s. COOPER csounmzc DESIGN STENCIL Filed Dec. 22. 1960 IN V EN TOR.

Arm/pus United States Patent 3,138,874 GEOMETRIC DESIGN STENCIL Eugene S. Cooper, Box 273, Kents Hill, Maine Filed Dec. 22, 1960, Ser. No. 77,588 1 Claim. (Cl. 331) The present invention relates to an improved stencil set and a method for drawing designs.

In the past stencils have been provided with perforations and with various shaped lines, or grooves, in order to permit pivoting and construction of single lines or repetitive lines or designs. According to the present invention a stencil set and method is provided which enables and facilitates the quick and simple construction of geometric designs especially symmetrical designs.

The construction of designs of the past using stencils has been inhibited or slowed by the need for a very deliberate effort to measure the starting and finishing points of the various design lines. The present invention provides a stencil set and method which enables the construction of an infinite number of varied designs facilitated by reference points not marring the drawing sheets which are fixed in relation to a platen and variable in relation to a perforated stencil which has a curve or scroll pattern. The stencil may be pivoted at the pivot point on the platen, by selecting any of its random perforations as an axis for the stencils rotation. This permits infinite variation of the position of the stencil scroll for drawing patterns.

Although such novel features as are believed to be characteristic of the invention and are pointed out in the claims, the invention and the manner in which it may be carried out, may be better understood by reference to the description following and the accompanying drawings.

FIGURE 1 is an exploded perspective view of the stencil set of the present invention including a piece of paper.

FIGURE 2 is a plan view of the stencil set of the present invention with a piece of paper engaged.

FIGURE 3 is a cross section of FIGURE 2 at lines 33.

FIGURE 4 is a design made by the stencil set.

Referring now to the figures in greater detail, where like reference numbers denote like parts in the various figures.

The stencil 1 is provided with a plurality of perforations 2 and a cut out scroll or spiral curve 3. The platen 4 is provided with a pivot 5. A series of equally spaced diameters 6 pass through the center of the pivot 5 and cut a series of concentric circles 7 whose centers are at the pivot 5. The diameters 6 and circles 7 form a sort of target.

In use a paper 8 having some degree of translucency is impaled upon the pivot 5 which protrudes from the central point of the platen 4. The stencil 1 is placed over the platen 4 so that the stencil may rotate about the pivot from an axis formed by the pivot and one of the ice stencils plurality of perforations 2 with the paper sandwiched between the stencil and the platen 4.

The diameters 6 and circles 7 on the platen 4 may be seen through the paper 8 forming a target pattern.

A design is formed by drawing any number of lines along a section of the cut out scroll or curve between any two points on the target formed by the diameters 6 and circles 7. The normal translucency of paper 8 permits the target to function as drawing reference points. By rotating the stencil 1 about the pivot 5 moving it to successive diameters 6, the identical curve pattern may be repeated to form part of a design pattern. By inverting the stencil 1 and replacing it on the pivot 5 at the same perforation 2 and repeating the original curve in the same succession, a symmetrical figure may be drawn.

In the preferred embodiment of the present invention, a plug 9 may be inserted at any one of the perforations 2 that may lie over one of the diameters 6. The plug may be used as a reference point to facilitate the correct rotation of the stencil to successive diameters 6 for the drawing of successive curves by advancing the plug to lie over other diameters in succession before the drawing of each of the desired lines. In the preferred embodiment there are six equidistant diameters 6 whose ends may be marked consecutively 1-12 as shown partially in FIG. 6.

The paper 8 may be taped to the platen 4 to hold it firmly so that it does not shift while the designs are being drawn. Various curves and scrolls of different widths may be used such as a Greek rhythmic curve. The stencil need not be symmetrical. The scroll or curve area while preferred within the body of the stencil may be found at the outer periphery of the stencil.

The terms and expressions which are employed are used as terms of description, it is recognized, though, that various modifications are possible within the scope of the invention claimed.

What is claimed is:

A design stencil set comprising a stencil, said stencil including; a plurality of perforations; at least one removable marker plug in at least one of said perforations; and a curve portion, a platen, a pivot in said platen; said pivot adapted to rotatably receive a stencil perforation, and a plurality of marked diameters approximately as long as the diameter of said stencil passing through the point center of said pivot equally dividing any circle having as its center said center point of said pivot.

References Cited in the file of this patent UNITED STATES PATENTS 709,219 Hochspeier Sept. 16, 1902 757,246 Ablett Apr. 12, 1904 2,532,537 Brown Dec. 5, 1950 2,834,110 Malakoff May 10, 1958 FOREIGN PATENTS 354,848 Great Britain Aug. 20, 1931 628,490 Great Britain Aug. 30, 1949 

